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Selection of the most suitable nonconventional machining process (NCMP) for a given machining\udapplication can be viewed as multi-criteria decision making (MCDM) problem with many conflicting\udand diverse criteria. To aid these selection processes, different MCDM methods have been proposed.\udThis paper introduces the use of an almost unexplored MCDM method, i.e. operational\udcompetitiveness ratings analysis (OCRA) method for solving the NCMP selection problems.\udApplicability, suitability and computational procedure of OCRA method have been demonstrated\udwhile solving three case studies dealing with selection of the most suitable NCMP. In each case study\udthe obtained rankings were compared with those derived by the past researchers using different\udMCDM methods. The results obtained using the OCRA method have good correlation with those\udderived by the past researchers which validate the usefulness of this method while solving complex\udNCMP selection problems

Selection of non-conventional machining processes using the OCRA method